Grate-bar.



PATENTED DEC. 20, 1904.

' H. BUDD.

GRATE BAR. APPLICATION FILED FEB. g4, 1903.

N0 MODEL.

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.UNITED STATES Patented. December 20, 1904.

PATENT OFFICE.

GRATE-BAR.

SPECIFICATION forming part of Letters Patent No. 778,106, dated December 20, 1904,

Application filed February 24, 1903. Serial No. 144,662.

.To aZl whom it may concern:

Be it known that I, HORAOEBUDD, a citizen of the United States, residing at Philadelphia,

in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in- Grate-Bars, of which the following is a specification.

This invention relates to grate-bars employed in fire-boxes; and it has for its object to provide a grate-bar whereby more durable and eflicient results are attained than heretofore.

The invention consists in the novel features of construction, which will be hereinafter fully described and claimed.

In the drawings, Figure 1 is a plan view of two of my improved grate-bars as assembled together. Fig. 2 is a side elevation thereof. Fig. 3 is a transverse section, as on the line 3 3 of Fig. 1. Fig. 4 is an end elevation of the bar.

My improved grate-bar in its preferred form is of the following construction.

A designates a longitudinal bar which is slightly beveled from top to bottom, as is usual in grate-bar construction. This bar is provided with two rows of teeth a b, which diverge outwardlyfrom the respective sides of the top of the bar. The teeth a b of the respective rows are staggered in relation to each otherthat is to say, the teeth of one row project from the bar A at points opposite to' the spaces between the teeth of the other row. The teeth of each row have substantially parallel long and short sides, and each tooth of either row terminates on a line which is substantially parallel to the sides of the teeth ofthe opposite row. I preferably extend each tooth so that its outer face terminates on a line which extends substantially along the long'side of one of the teeth of the opposite row. The teeth a]; are beveled from top to bottom, so thatashes and broken clinkers will readilyfall between the same, and the top of the teeth are slightly chamfered to deflect the slice-bar in cleaning the fire.

The bars forming the grate for a fire-box are arranged side by side and end to end. The

teeth at one end of the bars forming the front and rear of the grate areinterrupted by broadened ends, and the intermediate bars are provided with teeth throughout their length, so

as to present an uninterrupted grate from front to back. I have herein illustrated the bar employed in the front of the'fire-box, the teeth extending from the broadenedend c to the opposite end d and thelatter being adapted to register withone end of. another bar, as shown by dotted lines in Fig. 1. At intervals along one side of the bar two adjacent teeth a are connected at their outer ends to form spacing members cf, the outer faces of said members being parallel to the bar A, and the outer face of the tooth b opposite each spacing member is parallel to the bar, whereby when the bars are assembled side by side the spacing members a will abut against the teeth 6, and thereby maintain the bars in fixed lateral relation to each other.

By the above-described construction i t will be seen that when the bars are assembled a regular Zigzag space is provided between adjacent bars for the passage of air to the fire and for the passage of ashes and broken clinkers from the fire and that the outer pointed ends of the teeth of one bar occupy a position opposite the spaces between the teeth of the opposing ashes and clinkers are being cleaned from a fire the slice-bar frequently strikes the outer ends of the teeth and breaks the latter from the grate-bar. This danger is greatly reduced by my invention, for the reason that the slicebar cannot squarely strike theouter end of a tooth, as the zigzag opening between the adjacent bars always directs the said slice-bar to the base of the teeth. Another advantage of my invention is the breaking up of clinkers. If a clinker be lodged between two adjacent teeth, the slicebar in dislodging the clinker will drive the latter against the opposing point of one of the teeth of the adjacent grate-bar, and thereby disintegrate the clinker, so that said clinker will fall through the opening between the grate-bars.

I clairn 1. A grate-bar comprising a longitudinal bar provided with two rows of teeth diverg ing from the sides thereof, each of said teeth having substantially parallel sides, and the outer end of each tooth of either row being substantially parallel to a line extending parallel to the sides of the teeth of the opposite row, whereby when a plurality of bars is arranged side by side with the opposing rows of teeth of two adjacent bars in staggered relation to each other, a zigzag space will be provided between adjacent bars, substantially as and for the purpose set forth.

2. A grate-bar comprising a longitudinal bar provided with two rows of teeth diverging from the sides thereof, the teeth of one row projecting from the bar at points opposite the spaces between the teeth of the other row, each tooth having a long and short side substantially parallel to each other and the outer end of each of said teeth terminating on aline which extends substantially coincident with the long side of one of the adjacent teeth of the opposite row, whereby when a plurality of bars is arranged side by side with the opposing rows of teeth of two adjacent bars in staggered relation to each other, a zigzag space will be provided between adjacent bars, substantially as and for the purpose set forth.

3. A grate-bar comprising a longitudinal bar provided with two rows of teeth diverging from the sides thereof, each tooth having a long and short side substantially parallel to each other and the long side of each tooth forming an acute angle with the outer end thereof, whereby when a plurality of bars is arranged side by side with the opposing rows of teeth of two adjacent bars in staggered relation to each other, a Zigzag space will be provided between adjacent bars, substantially as and for the purpose set forth.

In testimony whereof l afiix my signature in presence of two witnesses.

HORACE BUDD. Witnesses:

GEO. REED, ANDREW V. GRoUru. 

